Answer and Explanation
Your Answer is
Correct Answer is B
Explanation
Because the two triangles are similar and the proportions of opposite sides are the same, so 80÷5×16=height to be sought, which is 96. Choose B.
21. To measure the height of a smokestack, Ariel places a mirror on level ground 80 feet from the base of the smokestack. He then forms 2 similar triangles looking into the mirror and backing up until he sees the reflection of the top of the smokestack, as shown below. Ariel's eyes are 6 feet from the ground and he is 5 feet from the image in the mirror. Which of the following is closest to the height, in feet, of the smokestack?
